Polished Tiger Iron slab TI300 Green Opal Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 80 mm x 70 mm thick

Beautiful full round with highly visible annular rings

Approximate dimensions at widest points 145 mm  x 65 mm  x 12 mm thick

Dimensions at widest points approximately 120 mm  x 40 mm wide x 6 mm thick

Polished Tiger Iron slab TI300 Green Opal Dimensions at widest points approximatelyTI300 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 355 mm x 190 mm . Slightly tapering thickness of 6 9 mm. Weighs: 1,150 grams From the Cleaverville Formation, Ord Ranges near Port Hedland, Western Australia. Age is over 3 billion years. Tiger iron is a banded iron formation (BIF) or jaspilite that has alternating layers of black and brown hematite magnetite, red jasper and chatoyant golden tiger eye.